Reaming and tapping machine.



-J.R.SAYL0R.. RE'AMING AND TAPPING MACHINE. APPLICATION FILED AUG. 10,1911. 1 512mm@ Patented Feb.16,1915.

a SHEETS-SHEET 1.

y ZI y meme '.T. R. SAYLOR.

REAMING AND TAPPING MACHINE. 4APPLICATION FILED AUG'. 10, 1911.-

Patented Feb. 16, 1915.

J. R. SAYLOR.

REAMING AND TAPPING MACHINE.

APFLIQATION FILED AUG.10, 1911.

'Patented Feb. 16, 191.5.

3 SHEETS-SHEET 3.

nieuwe.

,li ne b-b, Fi

tuinen enanas .ronn n. sermones' romrsrovvn, rnnnsnnvanra.

EEMIN@ "AND TAPPNG MACHINE. i s

uecilcatioiii of Letters Patent.

, Patenten rien. ae, inra.

I Application' filed August 10, 1911. ASerialNo. 643,298. i

T0 allfwhom it may concern:

.13e it known that 1, JOHN R. Samoa, a citizen of the United States,residing in Pottstown, county of Montgomery, 'State-.bt -Pennsylvania,have invented certain" m-aljwheh will be described hereafter.

\. is a side view o f my improved tapping machine; Fig. 2, 1s a frontelevation; Fig. 3,v isan enlarged view, partly in section, illustratingthe chuck for holding the work; Figl' 4, is a sectional view on the linea -a, Fig. 3; Fig. 5, is a view illustrating 'the chuck moved 'back toits full'extentV and in the open position; Fig. 6, is a view showing thehandige-ver mechanism for operating.

the chuck Figa'?, isa sectional View on the g. .2; Fig. 8, is a. view,similar to F10'. 7, showing the exterior of. the bearings Jihr-theshaft; Fig. 9, is a sectional View on the line c-c, Fig. 7, and Fig. 10,is a view looking in the direction of the arrow d Fig. 1.

1 is the base of the' machine having a flange 2 and thisbase forms thereceptacle for the lubricant, which is pumped back into 'the reservoirto be used over and over again.

3 are standards which support part of the overhead mechanism.

4 is an electric motor having a shatt 5, which is geared to'anintermediate shaft 6, through change gearin in an ordinary change gearbox 7. This shaft is in turn geared to a horizontal shaft 8, having apinion 9, which. meshes with the gear wheel able on this frame. 1n thepresent instance,

Ratchet-the pinions 14' and 15 hasteeth with which the teeth of the'clutch sleeve 16 engage. This sleeve is moved intoengagement witheither of the pinions by .the

shifter 'rod 17 having a head 18 on which is an arm '19 engaging theclutch sleeve.

The 'shifter rod 17 is actuated by mechanism,

"\ theifoiward end ofthe shaft 12 is a geazr wheel 20 shown by, dottedlines in Fig. 2, whichmeshes with the gear lwheels 21 on each of the'heads 22 in which are mounted the spindles 23. The gear wheels 21 aremounted on horizontal shafts 24, Fig. 7, and on the end of each shaft isa bevel pinion 25 meshing with'a bevel wheel 26 on a sleeve 2 7 throughwhich the spindle 23 extends. The sleeve 27 is s lined to the spindle 23sothat while t e s indle isV free to move lofigitudinally in t e sleeveit must turn-with itQ l rll`he sleeve 27 is secured to a ,clutch 28which extends into arecess 29 inthe'frame of the head 22. The end of thespindle `is reduced, as shown in Fig. 7, and on the red, and hasa'reduced portion. rl`he strength ot this Vclipis lessthan any otherpart of the mechanism so that in the event of 3amming` of the work, orthe strain on the mechanism being such as to cause the parts to break,the clip will be the part whichmill break andthis clip which isinexpensive can lhe readily replaced when necessary.-

lin the present machine, it will-he noticed vthat the hea'ds`22 aremounted ona frame 34, rigidly secured to the standard 3 .and the severalheads are longitudinally adiustthe trame hasbrackets 35 and the anges 36fot the head 22 rest upon the brackets.

Theseanges are slotted for the reception 'et the studs 37, on which arethe clamping nuts, securing Athe heads to the brackets,

4Fig. 8,' so that on releasing the nuts the heads.- can 'be moved in orout to a limited extent. Y v e 'E1n' order to allow the gears 25 and 23ire to always be in mesh, yI mount; on'the shaft 24 a sleeve 38, Fig. 7,`which 'carries-the gear wheel 21 .and this sleeve is l splined onthe-shaft so that while the shaft can turn with the `sleeve it may be`moved longitudinally in the sleeve with the head 22. This adjustment isnecessary in somev classes of work havingholes 'on 'offset centers, bymaking the heads adjustableI can `drilling heads, as the machine isadapte fori either tapping, reaming'or drilling.

standard 3 is a bracket 41, c arrying the I' chuck 42. The bracket 4llisadapted to guides in the extensionA 40 and can be'ad- Justed by theset screw :43. The chuck 42 has a base plate 44, provided with an*under-` 4 cut or dove'tailxrib45, adapted to a trans# Ais limited bystops.

' verse groove in the bracket 41 so that' the l chuck can be shiftedtransversely. This baseplate is under-cut as at46', Fig. 4, and fittingthis undercut portion lare the'iianges 47 of.-

the main frame 48 Aof the chuck. This frame has a fixed jaw 49 andarranged to slide in` au under-cut groove in the frame is a movable jaw50. The movement ofthis jaw 50 'This jaw 50' has a threaded recess andadapted to the recess is a threaded hollow'sleeve `514. Mounted in thesleeve is a plunger 52. The outward movement'of the plunger is limitedby a lscrew 53 and between the end of the plun er and the inner wallofthe sleeve is a coi ed'.y spring 54 so that the spring acts as a,cuslif f ion for the clampingk mechanism, after theA lay clampedbetween the workhas been rigid jaws. K

0n the end of the plunger .52 is 'pivoted a bell crank lever 55 and onearm of this bell crank lever is connected-'by link l56 'to 'a pivotpin57 on thegframe 48. The other arm of the bell crankflever' carries ablock 58, which is'adapted to-aslot 59 in a lever 60 pivoted at 61v tothe-base 1.` The lever 60 inf' the present instance, isactuatedbyfluidfunder A lever 1s a piston rod-.62, having apiston lder is suppliedwitljl fiuid un'der. pressure The oipe leads to the rear vend of ,-'th,ec vlin er andthe pipel 66 leads to the .for-

ward end of the cylinder and the 'valve is so arranged that it gcanl lbeturned to allow `lever to a position to 'close theljaws", and it j canalso be moved into positonso as to allow -fiuid to'enter the" rear ofthe cylinder;

moving the lever to open the jawsfofthe pressure- -and connected to theis levertpivoted at 68 and I .this lever is connected by a rod 69 to an`this'rock vshaft is a slotted arm 73, which Y engages one arm of thebell crank lever 55.

. This construction is particularly adapted 'for` Mounted on a forwardextension 40 of the use in light machines where the pressure exerted byhand is suflicient to the parts in the chuck. y

The shifter rod 17 is actuated from the of the worm wheel, in thevpresent instance,

isla disk 77 having a slot 78 in which` are adjustable blocks .79. Theseblocks can be of the disk.

Secured to the shaft 76, in the present instance, is an'arm 80, which isconnected to Y theshifter rod 1'7" and this arm -is in lthe -pathof theblocks 79 on the disk 77. 0n the.

shaft is an arm 81, havin' a weight to bal ance the shifter mechanism.-\Vlien the y wormen the shaft `11 gtu rn's"the disk in one direction,one ofthe blocks on the disk will strike the 'arm' 8O and shift theclutch sleeve', throwing said sleeve `into mesh with the opposite gear;.reversing the movement 'of the'shaft 11j. The shaft will then turn fin`thereverse'directin until the'otherblock 79 'comesin contact with thearm when the sleeve will'be shifted so thatvtheshaft l1 has a rotarymovement, first 'in one direc-A '.tion and thenin the other direction.This reverse, yrotary movement is communicated to all the spindles sothat during the cutting .operation the spindles move in one directionand as the spindles lare"`re tracted they move i .in'the oppositedirection.`

Then it is wished to shift the clutch by hand, the handle '82, mountedon the, ,for

.Ward end of jtheshaft 76,'is o erated,1 and y y as the shifter arm 8Gis attache to the lshaft ythrough the valve.i64"`a'ndpipes 65v and 66.

justed to a'nypoint desired 'on the face ioo 765th'e clutch "can be'throw'nvin gear-with either ofthe gear wheels I4 and 15 by the movementof thesaid hand lever.4 Thus,

'lower-If an elbow or ",l' or .cross is to be. threaded. -it .is placedbetween' the jaws of; 'thechuckf48 and thelhand lever 67 operated so as'to cause the'jawsto close on the article and as the jaws close the"idle movement 'w'll izo.

lof any one particular type.

Abe taken up by the spring 54 within the head. rll`he movable jaw 50 isset by turning the head, so that it will properly clamp the work and asthis machine is intended toI tap or ream a number of pieces which are ofany one particular type. once being set, will readilyu clamp the piecesThe cruck is moved forward by the operation of the pneumatic mechanism,so as to bring it in -alinement with the spindles 23'after the articleis clamped between the jaws, and by moving the handle 82, the clutchsleeve 16 can be thrown into mesh withone of the gears, causing thespindle to turn forward and the master screw sleeve 30 will feed thespindle to the work. Hthere is a tap in 2. The combination of a spindle;a base;` -a chuck slidably mounted on the 'base and the spindle, thethread. of the tap will be ofv the same pitch as the master sleeve. Theblocks 79 lare set on the` disk 77 soas to reverse the mechanism 'afterthe spindle is moved forward a certain distance and if a certaindepthvof thread is required, theA block is set to that depth and themachine will automatically reverse itself, travelingback vto itsstarting position.

The machine in case of accident or other reasons can be stopped bymoving the lever 82 at any time to the central position.

When the taps are clear of work the mechajaw; said bell-crank leverbeing pivotally connected close ,tothe jaw with an arm depending belowsaid pivot; a .lever having a sliding .connection with the depending armof the bell-crank-lever; and means foreperating said lever.

having a fixed and a mbvablejjaw; a bell crank lever and alinkconnecting the movable jaw with the body portion of the chuck; means foradjusting the movable'ja'w; yieldingmeans between the bell crank leveryand thesaid adjusting means a cylinder; a pist0n therein; means forcontrolling fluid undery pressure in the cylinder; 'a rod conne'cted tothe piston.; a slotted lever pivotally n The chuck is connected to saidrod;` and a block carried by the bell crank adapted to theslot.

3. In a tapping or reaming machine, the combination oi' a'spindle; meansfor driving thespindle; a sliding chuck for holding the Work a fixed'and a sliding jaw on the chuck; the lever mechanism for moving thesliding jaw toward and from -the xed jaw;

single actuating means for moving the slide into and out of line withthe spindle and fixed jaw; and a stop for limiting the movement of thesliding chuck, the lever mechanisrn for operating 'the movable jawretaining'the jaw in its closed position until-the chuck comes incontact with the stop and,

on the continued movement of the actuating .meansy the jaws of theclutch will be opened.

4. rl`he combination in a tapping or reaming machine, of aJ'spindle;means for driving the spindle; a base; a chuck slidably mounted onthe'base and having a fined and a movable jaw; a 'stop to, limit theoutward .movement of the chuck; a bell crank lever connecting themovable jaw with the body portion of the chuck; a lever for sliding thejaw on its base and for operating the bell for moving the movable jaw toand from the crank lever; a sliding connection between `said lever andthebell crank lever so that on the first movement of the operating leverthe chuck will be withdrawn until 1t comes in Contact withv its stopandl then, on the continued movement of the operating lever, the jawswill be opened through the medium of the bell crank lever.

5. The combination in a tapping or reaming machine, of a spindle; meansfor driving. the spindle; a base; .a sliding chuck5v mounted on thebase, said chuck having a' fixed and avmovable jaw to hold the work; abell crank lever pivoted tothe movable jaw; a link connected to thefixed portion of the chuck and forming a toggle'with the bell cranklever; 'a stop to limit ythe outwardk movement of the chuck; and meansfor actuatingthe free arm of the bell crank lever so that theslidingchuck will be withdrawn clear ofthe spindles until it comes to the stopand then the work `will, be released by -the continued movement of thebell crank lever which will break the toggle. Y

. In testimony whereoi:n l have signed my name tothis speciication, inthe presence of two subscribing witnesses. A

' JOHN R. SAYLUR.

Witnesses: WM. E. SHURE, l WM. A. BARR.' v

iio

